pheromone

noun

pher·​o·​mone ˈfer-ə-ˌmōn How to pronounce pheromone (audio)
: a chemical substance that is usually produced by an animal and serves especially as a stimulus to other individuals of the same species for one or more behavioral responses
pheromonal adjective

Examples of pheromone in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Huth had grown up on a steady diet of Will Wright, leaving pheromone trails to food caches in SimAnt, calibrating the temperature to make his SimEarth suitable for life. Eric Boodman, Vulture, 25 Mar. 2026 The design is based on the silkworm moth, which can still find mates using pheromones even after losing one antenna. Neetika Walter, Interesting Engineering, 23 Mar. 2026 My natural pheromones are rooted first with the mylk’s top notes, pink pepper and Italian bergamot, before the light heart of waterlily and bamboo kicks in. Essence, 17 Mar. 2026 Essential Oils Essential oils like peppermint, tea tree, citronella, lavender, and eucalyptus all have very strong scents and can act much like cinnamon to disrupt pheromone trails. Alexandra Kelly, Martha Stewart, 13 Mar. 2026 See All Example Sentences for pheromone

Word History

Etymology

Greek phérein "to carry" + -o- + -mone (in hormone) — more at bear entry 2

Note: Name introduced by the German biochemist Peter Karlson (1918-2001) and the Swiss entomologist Martin Lüscher (1917-79) in "'Pheromones': a New Term for a Class of Biologically Active Substances," Nature, vol. 183, no. 4653 (January 3, 1959), pp. 55-56: "We propose, therefore, the designation 'pheromone' for this group of active substances. The name is derived from the Greek pherein, to transfer; hormōn, to excite. Pheromones are defined as substances which are secreted to the outside by an individual and received by a second individual of the same species, in which they release a specific reaction, for example, a definite behaviour or a developmental process."

First Known Use

1959, in the meaning defined above

Time Traveler
The first known use of pheromone was in 1959

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Cite this Entry

“Pheromone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pheromone. Accessed 1 Apr. 2026.

Kids Definition

pheromone

noun
pher·​o·​mone ˈfer-ə-ˌmōn How to pronounce pheromone (audio)
: a chemical substance (as a scent) that is produced by an animal and serves as a signal to other individuals of the same species to engage in some kind of behavior (as mating)

Medical Definition

pheromone

noun
pher·​o·​mone ˈfer-ə-ˌmōn How to pronounce pheromone (audio)
: a chemical substance that is produced by an animal and serves especially as a stimulus to other individuals of the same species for one or more behavioral responses

called also ectohormone

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